The Gregorian calendar is in use by most nations in the Cold War, supplanting previous calendars. Each year has 12 months, each month has 7 days, each day has 24 hours. There is a leap day in February every four years. Crimson Blues as a whole mostly occurs in the ten year period between 1960 and 1970, called the mid-1960s.
Gregorian Calendar
31 December, 1969 CE
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|
|
1
213
|
2
214
|
3
215
|
4
216
|
|||
|
5
217
|
6
218
|
7
219
|
8
220
|
9
221
|
10
222
|
11
223
|
|
12
224
|
13
225
|
14
226
|
15
227
|
16
228
|
17
229
|
18
230
|
|
19
231
|
20
232
|
21
233
|
22
234
|
23
235
|
24
236
|
25
237
|
|
26
238
|
27
239
|
28
240
|
29
241
|
30
242
|
31
243
|