🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 96 (from laksa156)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa096.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.nus.edu.sg/registrar/calendar\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.nus.edu.sg/registrar/calendar\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.nus.edu.sg\/registrar\/calendar","crawl_time":1775328750,"first_indexed_time":1611540840,"http_code":200,"src_unparsed":"sg,edu,nus!www,\/registrar\/calendar s443","src_root_hash":"1276765365484926896","history_drop_reason":null,"meta_title":"Academic Calendar","meta_descriptions":[],"attrs_boilerpipe_text":"The standard academic calendar*, with effect from AY2020\/21, will have the following structure:\nIt consists of two semesters and a special term.\nEach regular semester includes 13 weeks of instruction and 2 weeks of end-of-semester examinations.\nThere are two consecutive mini-semesters in each regular semester. The first mini-semester (Mini-semester A) comprises 6 weeks of instruction, 1-week break (Reading Week) and 1 week of examinations. The second mini-semester (Mini-Semester B) comprises of 6 weeks of instruction, 1-week break (Reading Week) and 2 weeks of examinations (which is the same period as the end-of-semester examinations).\nSpecial term takes place during the Semester 2 vacation period. It comprises of two parts, each of which lasts 6 weeks and is inclusive of an examination period.\nThe table below presents the basic chronological structure of the two main semesters, with 2 mini-semesters within each regular semester, in any academic year. \n*\nThe Yong Loo Lin School of Medicine and the Faculty of Dentistry operate on a slightly different academic calendar structure.\n1 \nCommences on first Monday of August each year.\n2 \nFor Semester 1 and mini-semester 1A, this starts in the week immediately following Orientation Week. \n  For Semester 2 and mini-semester 2A, this commences on the second Monday of January each year. \n T\nhe University may start Semester 2 on the third Monday of January as deemed necessary in some years to maintain a 5-week vacation in December\/January.\n \nFor mini-semester B, this starts in the week following examination week of preceding mini-semester A. \n3 \nFrom Saturday to the following Sunday\n4 \nFrom Saturday of the final week of the preceding Instructional Period to Friday of the following week.\n5 \nFor Regular Semester and mini-semester B, a 2-week period that starts from the Saturday immediately following Reading Week and ends on Saturday. \n  For mini-semester A,1-week period from Monday to Saturday.\n6 \nFor Semester 1, this is during December to early January.\n  For Semester 2, this goes from May through July. The 2-part Special Term takes place during this vacation period, with each part being 6 weeks long.\nTo view the current, future and previous NUS Academic Calendars, please click on the respective links below.\nCurrent\nFuture\nPrevious\nAY2025\/2026\nAY2026\/2027\nAY2027\/2028\nAY2028\/2029\nAY2024\/2025\nAY2023\/2024\nAY2022\/2023","attrs_markdown":null,"attrs_readable_markdown":"The standard academic calendar\\*, with effect from AY2020\/21, will have the following structure:\n\n- It consists of two semesters and a special term.\n- Each regular semester includes 13 weeks of instruction and 2 weeks of end-of-semester examinations.\n- There are two consecutive mini-semesters in each regular semester. The first mini-semester (Mini-semester A) comprises 6 weeks of instruction, 1-week break (Reading Week) and 1 week of examinations. The second mini-semester (Mini-Semester B) comprises of 6 weeks of instruction, 1-week break (Reading Week) and 2 weeks of examinations (which is the same period as the end-of-semester examinations).\n- Special term takes place during the Semester 2 vacation period. It comprises of two parts, each of which lasts 6 weeks and is inclusive of an examination period.\n\nThe table below presents the basic chronological structure of the two main semesters, with 2 mini-semesters within each regular semester, in any academic year.\n\n![Academic Calendar](https:\/\/www.nus.edu.sg\/registrar\/images\/info\/default-album\/acadcalendar.png?sfvrsn=fd4a48bf_0)\n\n*\\* *The Yong Loo Lin School of Medicine and the Faculty of Dentistry operate on a slightly different academic calendar structure.**\n\n*1 Commences on first Monday of August each year.*\n\n*2 **For Semester 1 and mini-semester 1A, this starts in the week immediately following Orientation Week.   For Semester 2 and mini-semester 2A, this commences on the second Monday of January each year.   T*he University may start Semester 2 on the third Monday of January as deemed necessary in some years to maintain a 5-week vacation in December\/January.* For mini-semester B, this starts in the week following examination week of preceding mini-semester A.***\n\n*3 *From Saturday to the following Sunday**\n\n*4 From Saturday of the final week of the preceding Instructional Period to Friday of the following week.*\n\n*5 *For Regular Semester and mini-semester B, a 2-week period that starts from the Saturday immediately following Reading Week and ends on Saturday.   For mini-semester A,1-week period from Monday to Saturday.**\n\n*6 **For Semester 1, this is during December to early January.  For Semester 2, this goes from May through July. The 2-part Special Term takes place during this vacation period, with each part being 6 weeks long.***\n\nTo view the current, future and previous NUS Academic Calendars, please click on the respective links below.\n\n|   |   |   |\n|---|---|---|\n| **Current** | ****Future**** | **Previous** |\n| [AY2025\/2026](http:\/\/nus.edu.sg\/registrar\/docs\/default-source\/calendar\/ay2025-2026.pdf) | [AY2026\/2027](https:\/\/nus.edu.sg\/registrar\/docs\/default-source\/calendar\/ay2026-2027.pdf) [AY2027\/2028](http:\/\/nus.edu.sg\/registrar\/docs\/info\/calendar\/ay2027-2028.pdf) [AY2028\/2029](http:\/\/nus.edu.sg\/registrar\/docs\/default-source\/calendar\/ay2028-2029.pdf) | [AY2024\/2025](http:\/\/nus.edu.sg\/registrar\/docs\/info\/calendar\/ay2024-2025.pdf) [AY2023\/2024](http:\/\/nus.edu.sg\/registrar\/docs\/info\/calendar\/ay2023-2024.pdf) [AY2022\/2023](http:\/\/nus.edu.sg\/registrar\/docs\/info\/calendar\/ay2022-2023.pdf) |","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

4 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.2 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.nus.edu.sg/registrar/calendar
Last Crawled	2026-04-04 18:52:30 (4 days ago)
First Indexed	2021-01-25 02:14:00 (5 years ago)
HTTP Status Code	200
Meta Title	Academic Calendar
Meta Description	null
Meta Canonical	null
Boilerpipe Text	The standard academic calendar, with effect from AY2020/21, will have the following structure: It consists of two semesters and a special term. Each regular semester includes 13 weeks of instruction and 2 weeks of end-of-semester examinations. There are two consecutive mini-semesters in each regular semester. The first mini-semester (Mini-semester A) comprises 6 weeks of instruction, 1-week break (Reading Week) and 1 week of examinations. The second mini-semester (Mini-Semester B) comprises of 6 weeks of instruction, 1-week break (Reading Week) and 2 weeks of examinations (which is the same period as the end-of-semester examinations). Special term takes place during the Semester 2 vacation period. It comprises of two parts, each of which lasts 6 weeks and is inclusive of an examination period. The table below presents the basic chronological structure of the two main semesters, with 2 mini-semesters within each regular semester, in any academic year. The Yong Loo Lin School of Medicine and the Faculty of Dentistry operate on a slightly different academic calendar structure. 1 Commences on first Monday of August each year. 2 For Semester 1 and mini-semester 1A, this starts in the week immediately following Orientation Week. For Semester 2 and mini-semester 2A, this commences on the second Monday of January each year. T he University may start Semester 2 on the third Monday of January as deemed necessary in some years to maintain a 5-week vacation in December/January. For mini-semester B, this starts in the week following examination week of preceding mini-semester A. 3 From Saturday to the following Sunday 4 From Saturday of the final week of the preceding Instructional Period to Friday of the following week. 5 For Regular Semester and mini-semester B, a 2-week period that starts from the Saturday immediately following Reading Week and ends on Saturday. For mini-semester A,1-week period from Monday to Saturday. 6 For Semester 1, this is during December to early January. For Semester 2, this goes from May through July. The 2-part Special Term takes place during this vacation period, with each part being 6 weeks long. To view the current, future and previous NUS Academic Calendars, please click on the respective links below. Current Future Previous AY2025/2026 AY2026/2027 AY2027/2028 AY2028/2029 AY2024/2025 AY2023/2024 AY2022/2023
Markdown	null
Readable Markdown	The standard academic calendar\, with effect from AY2020/21, will have the following structure: - It consists of two semesters and a special term. - Each regular semester includes 13 weeks of instruction and 2 weeks of end-of-semester examinations. - There are two consecutive mini-semesters in each regular semester. The first mini-semester (Mini-semester A) comprises 6 weeks of instruction, 1-week break (Reading Week) and 1 week of examinations. The second mini-semester (Mini-Semester B) comprises of 6 weeks of instruction, 1-week break (Reading Week) and 2 weeks of examinations (which is the same period as the end-of-semester examinations). - Special term takes place during the Semester 2 vacation period. It comprises of two parts, each of which lasts 6 weeks and is inclusive of an examination period. The table below presents the basic chronological structure of the two main semesters, with 2 mini-semesters within each regular semester, in any academic year. ![Academic Calendar](https://www.nus.edu.sg/registrar/images/info/default-album/acadcalendar.png?sfvrsn=fd4a48bf_0) \* The Yong Loo Lin School of Medicine and the Faculty of Dentistry operate on a slightly different academic calendar structure.* 1 Commences on first Monday of August each year. 2 For Semester 1 and mini-semester 1A, this starts in the week immediately following Orientation Week. For Semester 2 and mini-semester 2A, this commences on the second Monday of January each year. The University may start Semester 2 on the third Monday of January as deemed necessary in some years to maintain a 5-week vacation in December/January.* For mini-semester B, this starts in the week following examination week of preceding mini-semester A.*** 3 From Saturday to the following Sunday** 4 From Saturday of the final week of the preceding Instructional Period to Friday of the following week. 5 For Regular Semester and mini-semester B, a 2-week period that starts from the Saturday immediately following Reading Week and ends on Saturday. For mini-semester A,1-week period from Monday to Saturday.** 6 For Semester 1, this is during December to early January. For Semester 2, this goes from May through July. The 2-part Special Term takes place during this vacation period, with each part being 6 weeks long. To view the current, future and previous NUS Academic Calendars, please click on the respective links below. \| \| \| \| \|---\|---\|---\| \| Current \| Future \| Previous** \| \| [AY2025/2026](http://nus.edu.sg/registrar/docs/default-source/calendar/ay2025-2026.pdf) \| [AY2026/2027](https://nus.edu.sg/registrar/docs/default-source/calendar/ay2026-2027.pdf) [AY2027/2028](http://nus.edu.sg/registrar/docs/info/calendar/ay2027-2028.pdf) [AY2028/2029](http://nus.edu.sg/registrar/docs/default-source/calendar/ay2028-2029.pdf) \| [AY2024/2025](http://nus.edu.sg/registrar/docs/info/calendar/ay2024-2025.pdf) [AY2023/2024](http://nus.edu.sg/registrar/docs/info/calendar/ay2023-2024.pdf) [AY2022/2023](http://nus.edu.sg/registrar/docs/info/calendar/ay2022-2023.pdf) \|
Shard	96 (laksa)
Root Hash	1276765365484926896
Unparsed URL	sg,edu,nus!www,/registrar/calendar s443