As you want to get the list of some of the best exams which must be applied for the Central Government jobs so here is the information of the same for you:

UPSC:
Exam Date Exam Name
29/06/2014 UPSC – Assistant Chemist No. 11/2013
24/05/2014 UPSC – IES/ISS Exam 2014
24 to 26/05/2014 UPSC – Combined Geo-scientist & Geologist Exam 2014
20/06/2014 UPSC – Engineering Services Exam 2014
22/06/2014 UPSC – Combined Medical Services Exam 2014
13/07/2014 UPSC – CPF (AC) Exam 2014
24/08/2014 UPSC – Civil Services (Preliminary) Exam 2014
24/08/2014 UPSC – Indian Forest Services (Preliminary) Exam 2014
28/09/2014 UPSC – NDA & NA Exam (II) 2014
26/10/2014 UPSC – CDS Exam(II) 2014
22/11/2014 UPSC – Indian Forest Services (Main) Exam 2014
14/12/2014 UPSC – Civil Services (Main) Exam 2014

SSC:
Exam Date Exam Name
27/04, 04/05/2014 (Postponed) SSC – Combined Graduate Level (Tier-I) Exam 2014
25/05/2014 SSCCR – Jr Zoological Assistant No. 02/2013
25/05/2014 SSCCR – Jr Technical Assistant No. 02/2013
25/05/2014 SSCCR – Laboratory Assistant No. 01/2013
25/05/2014 SSCCR – Jr Chemist No. 01/2013
25/05/2014 SSCCR – Jr Technical Assistant No. 02/2012
25/05/2014 SSCWR – Technician Gr ‘C’ No. 01/2013
25/05/2014 SSCWR – Information Assistant No.03/2012
25/05/2014 SSCWR – Information Assistant No. 01/2013
25/05/2014 SSCWR – Store Keeper Gr III No. 01/2013
25/05/2014 SSCWR – Milk Recorder No. 01/2013
25/05/2014 SSCWR – Economic Assistant No. 03/2012
25/05/2014 SSC – Junior Engineer (Civil & Electrical) Exam 2014
08/06/2014 SSC – JHT (Subordinate Offices) & Hindi Pradhyapak (CHTI) & Sr/Jr Translators Exam 2014
22/06/2014 SSC – SI in CAPFS, ASI in CISF & SI in Delhi Police Exam 2014 (Paper-I)
30, 31/08/2014 SSC – Combined Graduate Level (Tier-II) Exam 2014
14/09/2014 SSC – Stenographer (Gr C&D) Exam 2014
21/09/2014 SSC – SI in CAPFS, ASI in CISF & SI in Delhi Police Exam 2014 (Paper-II)
02, 09/11/2014 SSC – Combined Higher Secondary (10+2) Exam 2014
07/12/2014 SSC – Junior Translator (CSOLS)/Jr Hindi Translator Exam 2014

For more detailed information please let me know the particular one so that I can give you the details of that one only