Static Calendar & Time Utility
A browser-first calendar utility with century-scalable navigation, timezone-aware clocks, range math, and developer-ready export formats. Everything runs locally, and selected dates bookmark automatically using the URL hash.
September 2026
🍂 Autumn
30
31
1
2
3
4
5
6
7
8
9
10
11
12
Today13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
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5
6
7
8
9
10
October 2026
🍂 Autumn
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
7
Timezones
Sat, Sep 12, 2026, 07:35:10
UTC
Range & Date Math
Click one day to begin the range, then a second day to finish it.
Selected date: 2026-09-12
Range size: 0 days
Weeks + days: 0w 0d
Business days: 0
Shift selected date
Developer exports
Date stats
ISO week number: 37
Day of year: 255
Leap year: No
Year progress
70% completeOptions
How to use
Use the calendar grid to navigate across months, click a start and end date to calculate day ranges, and use the timezone selectors for instant local and pinned timestamp comparisons. The page hash updates automatically for sharing a selected date.