Number of weeks in 1678 year is 53 weeks
Weeks are according Panama calendar rules, Sunday first day and weeks are Sunday to Saturday

Week # From Date To Date Weeks from Now
Week 1 December 26, 1677 January 1, 1678 passed 18100 weeks ago
Week 2 January 2, 1678 January 8, 1678 passed 18099 weeks ago
Week 3 January 9, 1678 January 15, 1678 passed 18098 weeks ago
Week 4 January 16, 1678 January 22, 1678 passed 18097 weeks ago
Week 5 January 23, 1678 January 29, 1678 passed 18096 weeks ago
Week 6 January 30, 1678 February 5, 1678 passed 18095 weeks ago
Week 7 February 6, 1678 February 12, 1678 passed 18094 weeks ago
Week 8 February 13, 1678 February 19, 1678 passed 18093 weeks ago
Week 9 February 20, 1678 February 26, 1678 passed 18092 weeks ago
Week 10 February 27, 1678 March 5, 1678 passed 18091 weeks ago
Week 11 March 6, 1678 March 12, 1678 passed 18090 weeks ago
Week 12 March 13, 1678 March 19, 1678 passed 18089 weeks ago
Week 13 March 20, 1678 March 26, 1678 passed 18088 weeks ago
Week 14 March 27, 1678 April 2, 1678 passed 18087 weeks ago
Week 15 April 3, 1678 April 9, 1678 passed 18086 weeks ago
Week 16 April 10, 1678 April 16, 1678 passed 18085 weeks ago
Week 17 April 17, 1678 April 23, 1678 passed 18084 weeks ago
Week 18 April 24, 1678 April 30, 1678 passed 18083 weeks ago
Week 19 May 1, 1678 May 7, 1678 passed 18082 weeks ago
Week 20 May 8, 1678 May 14, 1678 passed 18081 weeks ago
Week 21 May 15, 1678 May 21, 1678 passed 18080 weeks ago
Week 22 May 22, 1678 May 28, 1678 passed 18079 weeks ago
Week 23 May 29, 1678 June 4, 1678 passed 18078 weeks ago
Week 24 June 5, 1678 June 11, 1678 passed 18077 weeks ago
Week 25 June 12, 1678 June 18, 1678 passed 18076 weeks ago
Week 26 June 19, 1678 June 25, 1678 passed 18075 weeks ago
Week 27 June 26, 1678 July 2, 1678 passed 18074 weeks ago
Week 28 July 3, 1678 July 9, 1678 passed 18073 weeks ago
Week 29 July 10, 1678 July 16, 1678 passed 18072 weeks ago
Week 30 July 17, 1678 July 23, 1678 passed 18071 weeks ago
Week 31 July 24, 1678 July 30, 1678 passed 18070 weeks ago
Week 32 July 31, 1678 August 6, 1678 passed 18069 weeks ago
Week 33 August 7, 1678 August 13, 1678 passed 18068 weeks ago
Week 34 August 14, 1678 August 20, 1678 passed 18067 weeks ago
Week 35 August 21, 1678 August 27, 1678 passed 18066 weeks ago
Week 36 August 28, 1678 September 3, 1678 passed 18065 weeks ago
Week 37 September 4, 1678 September 10, 1678 passed 18064 weeks ago
Week 38 September 11, 1678 September 17, 1678 passed 18063 weeks ago
Week 39 September 18, 1678 September 24, 1678 passed 18062 weeks ago
Week 40 September 25, 1678 October 1, 1678 passed 18061 weeks ago
Week 41 October 2, 1678 October 8, 1678 passed 18060 weeks ago
Week 42 October 9, 1678 October 15, 1678 passed 18059 weeks ago
Week 43 October 16, 1678 October 22, 1678 passed 18058 weeks ago
Week 44 October 23, 1678 October 29, 1678 passed 18057 weeks ago
Week 45 October 30, 1678 November 5, 1678 passed 18056 weeks ago
Week 46 November 6, 1678 November 12, 1678 passed 18055 weeks ago
Week 47 November 13, 1678 November 19, 1678 passed 18054 weeks ago
Week 48 November 20, 1678 November 26, 1678 passed 18053 weeks ago
Week 49 November 27, 1678 December 3, 1678 passed 18052 weeks ago
Week 50 December 4, 1678 December 10, 1678 passed 18051 weeks ago
Week 51 December 11, 1678 December 17, 1678 passed 18050 weeks ago
Week 52 December 18, 1678 December 24, 1678 passed 18049 weeks ago
Week 53 December 25, 1678 December 31, 1678 passed 18048 weeks ago